SLEEPERS Online Shop. SLEEPERS is an environmentally friendly slipper brand. The brand was founded by a group of surfers who saw their favorite places by the sea turn into a garbage dump. Because slippers are the most sold footwear in the world and because of the inseparable connection between slippers and beaches, they have chosen to contribute to the reduction of rubber and plastic in the ocean through this product. They make sustainable slippers from plant based rubber in all kinds of cheerful colors. So you not only walk around in colorful slippers, but you also contribute to a cleaner ocean.